[Steps Shown] Let 0 > a > b. Define a 1 = a, b 1 = b, and then define inductively a n+1 = for n ≥ 1. Prove that a n ≥ a n+1 ≥ b n+1 ≥ b n for all n ≥ 1 (Hint prove


Question: Let 0 > a > b. Define

a 1 = a, b 1 = b,

and then define inductively

a n+1 =

for n ≥ 1.

  1. Prove that
    a n ≥ a n+1 ≥ b n+1 ≥ b n
    for all n ≥ 1 ( Hint prove first that for any
  2. Conclude that both a n and b n are convergent
  3. Call

a * = and b * = .

Prove that a * = b *

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